1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kruka [31]
3 years ago
12

WWhat do these substances have in common?

Chemistry
2 answers:
olga2289 [7]3 years ago
8 0

Answer; Option A is correct

Explanation:

  • Matter is substance which is made up of atoms
  • Matter is a substance which occupies physical space

All the given four substance are matter :

  • Apple juice is a mixture.
  • Helium gas is a pure substance.
  • Salt water is mixture.
  • Copper wire is a pure substance.

But all of them are composed of atoms.


Mariana [72]3 years ago
4 0

The answer is that they are Pure substances

You might be interested in
What method would you use to find the volume of an irregularly shaped object?
dimulka [17.4K]
Displacement, usually the method that is used to measure the volume of an irregularly shaped object.
4 0
3 years ago
if the spin of one electron in an orbital is clockwise , what is the spin of the other electron in that orbital
nata0808 [166]

Here we have to get the spin of the other electron present in a orbital which already have an electron which has clockwise spin.

The electron will have anti-clockwise notation.

We know from the Pauli exclusion principle, no two electrons in an atom can have all the four quantum numbers i.e. principal quantum number (n), azimuthal quantum number (l), magnetic quantum number (m) and spin quantum number (s) same. The importance of the principle also restrict the possible number of electrons may be present in a particular orbital.

Let assume for an 1s orbital the possible values of four quantum numbers are n = 1, l = 0, m = 0 and s = \frac{+}{-}\frac{1}{2}.

The exclusion principle at once tells us that there may be only two unique sets of these quantum numbers:

1, 0, 0, +\frac{1}{2} and 1, 0, 0, -\frac{1}{2}.

Thus if one electron in an orbital has clockwise spin the other electron will must be have anti-clockwise spin.    

6 0
3 years ago
When 20.0 grams of an unknown compound are dissolved in 500. grams of benzene, the freezing point of the resulting solution is 3
Lelu [443]

Answer: 120g/mol

Explanation:

The first step we are to take is to calculate the freezing point depression of the solution.

ΔT(f) = freezing point of pure solvent - freezing point of solution

ΔT(f) = 5.48 - 3.77

ΔT(f) = 1.71°C

Next we are to calculate the molal concentration of the solution using freezing point depression

ΔT(f) = K(f) * m

m = ΔT(f)/K(f)

m = 1.71/5.12

m = 0.333 molal

Now, we calculate the molecular weight of the unknown...

m = 0.333 mol = 0.333 mol X per kg of benzene

moles of X = 0.333 mol of X per kg of benzene * 0.5kg of benzene

moles of X = 0.1665

molecular weight of X = 20g of X/0.1665

molecular weight of X = 120/mol

5 0
3 years ago
Which of following statements is true about scientific knowledge? Scientific ideas are not subject to change, so scientific know
Romashka [77]

Answer:

The accepted views of science knowledge can change over time. Changes can result from new science observations, but can also be affected by social, political or religious convictions. To develop a deeper understanding, students need to investigate the context of the time in which science ideas were developed.

Explanation:

7 0
3 years ago
Read 2 more answers
How does bioremediation improve the quality of life for humans?
mart [117]

Completely natural process with almost no harmful side effects

6 0
3 years ago
Other questions:
  • Calculate the mass in micrograms of zinc oxalate the chemist has added to the flask. be sure your answer has the correct number
    6·1 answer
  • Is Potassium Acetate an acidic or basic salt?
    12·1 answer
  • LaShawna and her family went to Yellowstone National Park. They saw a spring called Green Dragon Spring. Steam was rising off th
    13·2 answers
  •  The atom fluorine generally will become _____ stable through the formation of an ionic chemical compound by accepting _______ e
    8·2 answers
  • what is the percent composition of compound that has a total mass of 63.9 g that contains 51.0 g Cu and 12.9 g O?
    5·1 answer
  • I need help answering 14 and 15
    13·1 answer
  • Cations are formed from the?
    13·1 answer
  • FREÉ Points out!!!!!!!!!!!​
    10·2 answers
  • Identify the reactants in the equation: 6C0, + 6H2O - CHUO+ 60,
    11·1 answer
  • Your dad is working on creating a brick border for the lake in your backyard each brick has a mass of 100 g and a volume of 20 c
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!